Water-heater.



T. GRIFFIN.

Witnesses Attorneys THE NOR 'S IFIER (70,, HHOTO-LITHCL. WASHINGYON. D1:

Patented Oct. 6, 1914.

UNITED STATES PATENT OFFICE.

THOMAS GRIFFIN, OF FULTON, NEW YORK WATER-HEATER.

To all whom it may concern 1 Be it known that I, THoMAs GRIFFIN, a

citizen of the United States, residing at Fulton, in the county ofIOswego and. State of New Y ork, have invented a new and usefulWater-Heater, ofwhich the following is a specification.

This invention relates to water heaters.

An object of the present invention is to provide a heater forwater whichwill utilize such heat as usually escapes up the chimney.

A further object is to provide a water heater which is placed in thechimney, will not interfere with the draftthereof and will utilize thehigh temperature of the flue gases. H l

A further object is to provide a water heater adapted to utilize thewaste heat as it escapes through the chimney and which heater is alsoequipped with a gas burner so that auxiliary heating means are had,

should the escaping heatof the flue gases be insufficient or should thefire within the furnace be out. l s 1 A further object is to provide awater heater installed in the chimney of a furnace so as to utilize thewasteheat thereof and .which water heater is provided with a gas burnerso that the waterlwithin the heater may be quickly raised to a hightemperature by means of the gas burner or the water may be slowly andcontinuously heated by the flue gases, a

l/Viththe foregoingand other objects in view which will appearas thedescription proceeds the invention resides in the com-' bination andarrangement of parts and in the details of construction hereinafter.described and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, can be made within thescope :of what is claimed, with out departing from the' spirit of theinvention. l. In the drawings accompanying this specification andforming a part thereof, the re ferred embodiment of myinvention is ilustrated, in which 1 1 H a Figure 1 is a view in vertical section ofmyimproved water heater. Fig. 2; is a cross sectional view takengon theline. 22 of Fig. 1. Fig. 3is a cross sectional view taken on the line3-3of Fig.1;

Referringgto the drawings in which simi- Specificationof Letters Patent.

improvements in lar reference numerals designate correJ sponding partsthroughout thefseveraltfigs ures, the, heater includes an outer drum 4:

to the upper and open extremity of which is removably secured theannular plate 5. Av sleeve or pipe 6 projects upwardly from s PatentedOct. 6, 1914. Application filedApril ll lme. Serial No. 831,249.

the plate and is designed to communicate 3 with a chimney flue. Asomewhat similar annular plate 7 is rigidly secured to the lowerextremity of the outer drum and supports the pipe 8 which projectstherebemath. The pipe 8 acts as an inlet for the fluegases While thepipe 6 serves as an outlet therefor, In order to properly control thedraft of the chimney and at the same time to regulate the temperature ofthe water within the heater, the damper plates 9 and 10 are provided,each one be-; ing equipped with the sleeve 10tl1rough which extend thehandled shafts 1 1 and 12; This construction allows the dampers tobereadily manipulated, controlling the en trance to the heater andindirectly controlling the length of time required by the V gases totraverse the same.

Located within the drum 4 drum 13 which is held in spaced relation'theretoby the spacing arms 14. The inner drum .is relatively smaller indiameter than the outer drum and thus provides an annu made of the factthat the inner drum stops is the inner short of the ends of the outerdrum so that suitable inlets and outlets will be had for the passageway13'. A heating coil l5 is presentclrawingshas been designed with threesets of concentric coils.

v disposeclwithin the inner drum and inthe noted, however, that thenumber of coils I may be varied as circumstances rnay dictate.

A water inletpipe 16 communicates with the 85" lar passage 13 therewith.Also mention is upstanding to the diameter of the inner drum and isadapted to move thereagainst, thus completely closing at its lowerextremity, the passageway 13. The gas burner 18 is positioned within andsubstantially centrally of the heating coilsv and provides auxiliaryheating means for the water. A set of alined doors a4. and are securedto the outer and inner drums and render the interior of the J heateraccessible and also provide an openingfor the insertion of ignitionmeans for the gas burner. The cover 19 is rotatably mounted upon theupper extremity of the inner'drum 13 and is used to retain heat withinthe inner drum during such times as the gas, burner is being used, or itmay serve as means to prevent the excessive heating of the water withinthe coils by the flue gases by preventing the flue gases from passingdirectly through the inner drum. The said cover may be rotated to aperpendicular position as indicated in dotted lines, by means of thehandle 19'.

k The heater as thus constructed is placed, Within the flue of a chimneyand utilizes'the Waste heat of the flue gases. VVlrenit is desired tocontinuously heat the water within the coils such as for the purpose ofheat ing the feed water for a boiler, or for heatingthe water within aradiator heating system, the valve sleeve 21 is maintained in the raisedposition illustrated in Fig. 1 of the drawing and the cover 19 isrotated to an perpendicular position. The damper plates 9 and 10 arearranged so as to produce theproper and required draft forthe fire. Theescaping flue gases making their way up the chimney will encounter thecoils and heat the water therein. When it is desired to increase thedraft of the chimney, this may be accomplished by lowering the valvesleeve 21, thus providing an auxiliary passage around the coils and thusallowinga greater volume of gas to pass through the heater in the sametime. If it is desired that the water within the coils be heated to aslight'extent only, the cover 19 is rotated to close the upper.extremity of the inner drum and the sleeve maintained in a loweredposition. The cover will prevent thepassage of the heated gases to the Idrum, an inner drum positioned therein of relatively smaller diameterand shorter length than the outerdrum, means holding coils and the gasesalready within the inner drum will prevent the further admission ofheated gases thereto. The auxiliary pas sage provides for a suitableexit of the flue gases. The cover 19 is alsoutilized when a rapidheating of the water within the coils is desired and this isaccomplished by, utilizing the gas burner 18 which; extendsaxiallythrough the inner drum. The cover 19 serves to maintain the heatof theburn ing gases within the drum and thus provides for a rapid andhigh heating of the water,

the greatest economy is effected when the Water is heated through themedium of the escaping gases as will be readily appreciated.

Having thus fully described my invention, what I claim is i 1. A waterheater comprising spaced inner and outer drums, a Water coil disposedwithin the inner drum, a slidably mounted valve sleeve adapted to moveagainst the inner drum and close the auxiliary passage extending betweenthe said drums.

2. A water heater comprising an outer drum, an inner drum positionedtherein of relatively smaller diameter and shorter length than the outerdrum, means holding the said drums in spaced relation and defining anauxiliary passage extending therebetween, a heating coil positionedwithin the inner drum, inlet and outlet pipes communieating with saidcoil, a gas burner disposed within said inner drum and extending axiallythereof, annular plates with outwardly extending pipes connected to theextremities of said outer drum, a valve sleeve slidably carried by thelower annular plate, said valve sleeve of substantially'equal diameterto the diameter of the inner drum within said inner drum and extendingaxially thereof, annular plates with outwardly extending pipes connectedto the extremities of said outer drum, a valve sleeve slidably carriedby the lower annular plate, said valve sleeve of substantially equaldiameter to the diameter of the inner drum and adapted to contacttherewith and close the said I auxiliary passage, and, doors closingopenings provided in the side walls ofthe said drums, rendering theinterior of said drums accessible.

4. A Water heater comprising an outer the said drums in spaced relationand defining an auxiliary passage extending therebetweema heating coilpositioned within the inner drum, inlet and outlet pipes communi eatingwith said coil, a gas burner disposed within said inner drum andextending axially thereof, annular plates with outwardly extending pipesconnected to the extremities of said outer'drum, a valve sleeve slidablycarried by the lower annular plate, said valve sleeve of substantiallyequal diameter to the diameter of the inner drum and adaptedto contacttherewith and close the said auxiliary passage, doors closingopeningsuprovided in the side walls of the said drums, rendering theinterior of said drums accessible, and a pair of dampers at the upperand lower extremities of the said annular plates.

5. A water heater comprising an outer drum, an annular plate with aninlet pipe communicating therewith rigidly secured to the lowerextremity of said drum, an annular plate with an upstanding pipedetachably secured to theupper extremity of said drum, damper platescarried at the extremities of said pipes, an innerdrum relativelysmaller in diameter and length than the outer drum, spacing armsextending between the drums and holding the same inspaced relation, thespace intermediate the drums defining an auxiliary passage, a pipe coildis posed within the inner drum, inlet and outlet pipes thereforcommunicating therewith,

a gas burner extending axially of the said pipe coil, a cover detachablypositioned upon the upper extremity; of said inner drum, a valve sleeveslidably carried by the lower annular plate, handles secured to saidvalve sleeve extending through the said first mentioned pipe for thecontrolling of said valve sleeve, said valve sleeve substantially equalin diameter and adapted to abut with the said inner drum, and doorsclosing openings provided in the side walls of said inner and outerdrums.

6. A water heater comprising an outer slidably mounted valve sleeve 00-acting with the said drums and adapted to close the said auxiliarypassageway therebetween, a water coil disposed within theinner drum,

and a gas burner disposed within theinner drum and extending axiallythereof.

8. Awater heater comprising an outer drum, an inner drum positionedtherein defining an auxiliary passageway therewith, a

slidably mounted valve sleeve 00- acting,

with the said drums and adapted to close the said auxiliary passagewaytherebetween, a water coil disposed within the inner drum, a gas burnerdisposed within the inner drum and extending axially thereof, and avalve plate secured at the upperextremityof the inner drum for theclosure thereof.

In testimony that I claim the'foregoing as a my own, I haveheretoaifixed my signature in the presence of two witnesses.

THOMAS GRIFFIN;

lVitnesses:

J AMES R. SOMERS, WM; S; HILLIoK.

, Copies of this patent maybe obtained for five cents each, byaddressing the Commissioner of Iatent s,

Washington, .D. G.

